86442881 has 16 divisors (see below), whose sum is σ = 102643200. Its totient is φ = 71227968.

The previous prime is 86442869. The next prime is 86442899. The reversal of 86442881 is 18824468.

It is not a de Polignac number, because 86442881 - 2⁶ = 86442817 is a prime.

It is a super-2 number, since 2×86442881² = 14944743351160322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86441881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53816 + ... + 55398.

It is an arithmetic number, because the mean of its divisors is an integer number (6415200).

Almost surely, 2^86442881 is an apocalyptic number.

It is an amenable number.

86442881 is a deficient number, since it is larger than the sum of its proper divisors (16200319).

86442881 is a wasteful number, since it uses less digits than its factorization.

86442881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888.

The product of its digits is 98304, while the sum is 41.

The square root of 86442881 is about 9297.4663753089. The cubic root of 86442881 is about 442.1569042939.

The spelling of 86442881 in words is "eighty-six million, four hundred forty-two thousand, eight hundred eighty-one".